Re: WIP: Avoid creation of the free space map for small tables

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От John Naylor
Тема Re: WIP: Avoid creation of the free space map for small tables
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Msg-id CACPNZCt4LGejsMNmUvzQdCPLWi5ARpaJaFsCs_BM1nE9Yf+7Yg@mail.gmail.com
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Ответ на Re: WIP: Avoid creation of the free space map for small tables  (Amit Kapila <amit.kapila16@gmail.com>)
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On Thu, Feb 21, 2019 at 7:58 AM Amit Kapila <amit.kapila16@gmail.com> wrote:
> So here you are inserting 4-byte integer and 1024-bytes variable
> length record.  So the tuple length will be tuple_header (24-bytes) +
> 4-bytes for integer + 4-bytes header for variable length data + 1024
> bytes of actual data.  So, the length will be 1056 which is already
> MAXALIGN.  I took the new comments added in your latest version of the
> patch and added them to the previous version of the patch.   Kindly
> see if I have not missed anything while merging the patch-versions?

OK, that makes sense. Looks fine to me.

-- 
John Naylor                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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